A container for dispensing an aerosol product. The container (1) includes a body (2) formed of plastics material such as PET, and a mounting cup and collar assembly (53). The body (2) includes a neck (10) defining an opening (50) having internal and external walls (51 and 52), respectively. The mounting cup and collar assembly (53) is formed of malleable 10 material, and is shaped to straddle the internal and external walls (51 and 52) of the opening (50), and be crimped to the external wall (52) of the neck (10). The mounting cup and collar assembly (53) is preferably of unitary construction, and, includes a lining (60) on its inner surface to assist in providing a seal between the components.